Display screen or a portion thereof with graphical user interface



FIG. 1 is a front view of an image of a graphical user interface for a display screen or a portion thereof according to our design, shown in a first embodiment; and,

FIG. 2 is a front view thereof in a second embodiment.

The broken line showings of portions of a display screen in the figures are environmental only and form no part of the claimed design.

The areas including stipple-fill show a portion of the design that has a contrasting appearance to the non-filled areas. 

CLAIM The ornamental design for a display screen or a portion thereof with graphical user interface, as shown and described. 